New filter monitoring increases element economy…

Ratingen, 04.08.2008 (PresseBox) -
Monitoring the economical use of filter elements in hydraulic circuits will be eased remarkably through the new series of capacity indicators VSA 24, which are ready to launch by Bühler technologies, a leading manufacturer of components for power packs.

The essential difference to traditional clogging indicators consists of a modern electronic controller; this controller is standard in all models and features a thermo lock-out among other advanced details. The thermo lock-out suppresses all signals until the oil exceeds the operating temperature of 30°C. Short element lifetime due to false alarms caused by low temperature is definitely eliminated.

Another feature of the capacity indicator VSA 24 is a corona of LED's which signals visually the present status of the indicator in addition to electrical outputs. Green LEDs will start flashing as soon as electrical power is switched on. They will turn to steady light if the oil temperature rises over 30°C, i.e. it signals that the indicator is now fully operational.

In order to exhaust the full dirt holding capacity of a filter element, the indicator has a special design, i.e. the VSA series provides two alarm outputs regularly. When the filter element is exhausted to its 75% of the whole capacity, the yellow LEDs will lit up and the according alarm output will be activated. If the dirt holding capacity is 100% exhausted, red LEDs are lit additionally and the corresponding alarm is activated too.

Since flow variations within the circuit may vary the recordable pressure values on the indicators sensors (for an instance: If there is a flow in the return lines temporarily, traditional clogging indicators will lost signals entirely because of the lack of pressure loss), all electrical signals are run on a self-locking mode. This provides a clear status of the filter elements condition at any time and thus makes maintenance plans much more accurate and economical.

Other features like self-checking function and suppression of pressure ripples are of course state of the art.

Attractive pricing make these new condition monitoring devices affordable for both the OEM and the aftermarket.

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